Tristan Tzara (April 16, 1896 - December 25, 1963) is the pseudonym of Sami Rosenstock, born in Moinesti, Bacău, Romania. A poet and essayist who lived for the majority of his life in France, he is known mainly as a founder of Dada, a nihilistic revolutionary movement in the arts.

The Dadaist movement originated in Zürich during World War I; Tzara wrote the first Dada texts - La Première Aventure céleste de Monsieur Antipyrine (1916; "The First Heavenly Adventure of Mr. Antipyrine") and Ving..